ViewSonic PJL7211 manual The electrical power cord is not plugged in, and play monitor, Phenomenon

Phenomena that may be easy to be mistaken for machine defects

About the phenomenon confused with a machine defect, check and cope with it according to the following table.

Phenomenon	Cases not involving a machine defect	Reference
		page
	The electrical power cord is not plugged in.	11
	Correctly connect the power cord.
	The main power source has been interrupted during
	operation such as by a power outage (blackout), etc.	11, 14
	Please disconnect the power plug from the power outlet,
Power does not	and allow the projector to cool down at least 10 minutes,
	then turn the power on again.
come on.
	Either there is no lamp and/or lamp cover, or either
	of these has not been properly fixed.
	Please turn the power off and disconnect the power plug from	49, 50
	the power outlet, and allow the projector to cool down at least
	45 minutes. After the projector has sufficiently cooled down,
	please make confirmation of the attachment state of the lamp
	and lamp cover, and then turn the power on again.
	The signal cables are not correctly connected.	9
	Correctly connect the connection cables.
	Signal source does not correctly work.	–
	Correctly set up the signal source device by referring to the
	manual of the source device.
	The input changeover settings are mismatched.	15
	Select the input signal, and correct the settings.
No pictures are	The brightness is adjusted to an extremely low level.
displayed.	Adjust BRIGHTNESS to a higher level using the menu	25
	function.
	The computer cannot detect the projector as a plug
	and play monitor.	10
	Make sure that the computer can detect a plug and play
	monitor using another plug and play monitor.
	The BLANK screen is displayed.	20
	Press the BLANK button on the remote control.
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ViewSonic 57 PJL7211